.box {
  left: 50%;
  top: 50%;
  transform: translateX(-50%) translateY(-50%);
  min-width: 600px;
  min-height: 400px;
  padding: 0;
  border: 0;
  position: fixed;
  z-index: 11110;
  display: block;
  box-sizing: border-box;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 6px 12px 0 rgba(106, 115, 133, 22%);
  transition: transform 0.3s ease-in;
  line-height: 14px;
  font: 12px Helvetica Neue, Helvetica, Arial, Microsoft Yahei, Hiragino Sans GB,
    Heiti SC, WenQuanYi Micro Hei, sans-serif;
}
.tool {
  position: absolute;
  border-bottom-left-radius: 8px;
  border-bottom-right-radius: 8px;
  overflow: hidden;
  width: 100%;
  display: inline-flex;
  z-index: 1;
  align-items: center;
  justify-content: flex-end;
  pointer-events: none;
}
.tool div {
  border-radius: 50%;
  padding: 10px;
  transform: scale(0.8);
  pointer-events: visible;
}
.tool div:hover {
  background-color: rgba(0, 0, 0, 10%);
}
.content {
  position: relative;
  border-bottom-left-radius: 8px;
  border-bottom-right-radius: 8px;
  overflow: hidden;
  background-color: #fff;
}
.contain {
  padding-bottom: 15px;
  background-position: top center;
  background-size: contain;
  background-repeat: no-repeat;
  display: flex;
  align-items: flex-start;
  flex: 1;
  height: 385px;
}
.menu::-webkit-scrollbar,
.item::-webkit-scrollbar {
  width: 0 !important;
  height: 0 !important;
}
.menu {
  flex: 1 1 0;
  flex-basis: calc(480px * 0.2);
  height: 100%;
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  min-width: fit-content;
  overflow: auto;
}
.item {
  flex: 4 4 0;
  flex-basis: calc(480px * 0.8);
  height: 100%;
  box-sizing: border-box;
  display: block;
  margin: 0 auto;
  position: relative;
  overflow: auto;
}
.selected {
  color: rgb(51, 103, 214) !important;
}
.selected > .icon {
  fill: rgb(51, 103, 214) !important;
}
